Illinois Counties

Illinois, Located in the Midwest, it is home to Chicago, the third-largest city in the US. The state is a major transportation hub and an agricultural leader, known for its vast corn and soybean fields. It also plays a significant role in manufacturing and finance.. There are 102 county in Illinois. You can find the list of these counties and detailed information from the links below.

Franklin County
Franklin County

Franklin County, population 38,060

Fulton County
Fulton County

Fulton County, population 33,690

Fayette County
Fayette County

Fayette County, population 21,264

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Counties on Map (4)